Allergy season calendar
- when is pollen allergy season
- when is allergies season
- what months are pollen season
- seasonal allergy pollen count
Pollen count today
When is grass pollen season!
When is Allergy Season in California? Start, Peak, and End (2025)
Key Takeaways
- Pollen seasons differ across California’s regions due to its diverse climates and plant life.
- The worst allergy months vary by region but typically include March to May (tree pollen), June to August (grass pollen), and September to November (weed pollen).
- Preparation tips include monitoring local pollen counts and starting allergy medications early for proactive management, with Allermi nasal spray being a helpful option.
California’s mix of climates and plant life makes allergies different depending on where you are in the state.
In Northern California, with its big oak trees, and down in Southern California, with sunny beaches, pollen seasons don’t all happen at the same time.
Different plants like trees, grasses, and weeds release pollen at various times of the year, which makes allergies tricky to handle for people living in different regions.
This article explains when pollen levels are highest in California, which months are toughest for allergies, and how you can get ready.
It’s a hel
- what month is allergy season
- how long does allergy season last